Characterization of a highly sensitive and selective hydrogen gas sensor employing Pt nanoparticle network catalysts based on different bifunctional ligands
Characterization of a highly sensitive and selective hydrogen gas sensor employing Pt nanoparticle network catalysts based on different bifunctional ligands
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DOI：
10.1016/j.snb.2020.128619
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发表时间：
2020-11-01
影响因子：
8.4
通讯作者：
Lang, Walter
中科院分区：
文献类型：
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作者：
Pranti, Anmona Shabnam;Loof, Daniel;Lang, Walter
采用配体稳定的N纳米粒子作为催化剂，研制了一种具有上级灵敏度、选择性、分辨率和动态响应的催化型氢气传感器。我们利用双功能配体反式-1，4-二氨基环己烷（DACH）、1，5-二氨基萘（DAN）、4，4“-二氨基对三联苯（DATER）、联苯胺（BEN）和对苯二胺（PDA）表征了不同的催化剂用于氢气传感。通过比较5种类型的配体连接的N纳米颗粒和未稳定的N纳米颗粒的结构方面（TEM和SEM）和气敏性能进行综合评价以选择优化的催化剂。从这项研究中，DATER连接的N纳米颗粒似乎非常有前途：传感器对氢具有选择性，并显示出极高的灵敏度，约400 mV/1% vol。但对甲烷和乙烷没有交叉敏感性。同样，具有DATER和DAN连接的N纳米颗粒的传感器可以检测低至0.001%（10 ppm）的浓度，平均响应时间为650 ms（t（90））。
A catalytic hydrogen gas sensor of superior sensitivity, selectivity, resolution and dynamic response was developed with catalysts composed of ligand-stabilized N nanoparticles. We have characterized different catalysts utilizing the bi-functional ligands trans-1,4-diaminocyclohexane (DACH), 1,5-diaminonaphthalene (DAN), 4,4 ''-diamino-p-terphenyl (DATER), benzidine (BEN) and p-phenylene diamine (PDA) for hydrogen gas sensing. A comprehensive evaluation by comparison, with respect to both, structural aspects (TEM and SEM) and gas sensing performance of the 5 types of ligand-linked N nanoparticles and non-stabilized N nanoparticles was conducted to select the optimized catalysts. From this investigation, DATER-linked N nanoparticles appear immensely promising: the sensor is selective to hydrogen and shows extremely high sensitivity, around 400 mV/1% vol., but exhibits no cross-sensitivity to methane and ethane. Likewise, sensors with DATER- and DAN-linked N nanoparticles can detect down to 0.001 % (10 ppm) alongside 650 ms average response time (t(90)).